ESAB Aristotig255 AC/DC DTE 255 Instruction Manual page 10

GB
Position = MMA
In this position the welding power source is prepared for welding with coated
electrodes. The HF unit and the Lift−Arc are disconnected, and the hot−start function
is activated in order to supply incresaed current at the start.
Position = HF unit ON
When pressing the torch trigger the gas starts flowing, the HF unit goes on,
generating an electric spark between the electrode and the welding material, the gas
is ionised and an arc is produced. When the arc is stable, the HF unit will
automatically be disconnected.
Position = Lift−Arc
By Lift−Arc is meant that you place the torch with the electrode on the spot where
you want to start the welding, press the torch trigger and lift up the torch. In doing so
an arc is produced.
The current slowly increases up to the set value during the set "slope up" time. When
you want to finish welding, the contact is released and the current slowly decreases
to the set "slope down" time.
Place the electrode against the workpiece.
Tilt the torch a little, lift and an arc is produced.
Position Two/four−stroke
Two−stroke means that the arc is struck when the torch trigger is pressed and
extinguished when it is released.
Four−stroke means that it is not necessary to keep the torch trigger pressed while
the welding is going on. The arc is struck by pressing an releasing the switch and is
extinguished by repeating the action.
Four−stroke with the possibility to switch between two currents (switching function).
Through short activation of the burner cpontact, the switching function gives rise to
switching between two adjustable currents.
If the burner contact is kept pressed in the current starts to slope down.
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Press in the torch trigger.
To stop, release the torch trigger.
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